Summary of the invention
In order to overcome the deficiency of prior art, the invention provides a kind of missile-borne data testing system, its integrated level is high, and size is little, and cost is low, overload-resistant height, it is high to repeat practicality, and reliability is high, and passage is many, and amount of test data is big, is suitable for using on the various bullets.
The object of the present invention is to provide a kind of missile-borne data testing system, it comprises acquisition module, processing module, communication module and power module,
Wherein acquisition module is used to gather the missile-borne sensory unit data; All signals that comprise missile-borne sensory unit; Like power supply signal, body attitude signal etc.; Comprise on the bullet for example state and control that computer correction instruction, laser detector, steering wheel instruction and decoder etc. on thermal cell, gyroscope, accelerometer, body speed waveform, the bullet play flight attitude and execution data etc., acquisition module comprises variable connector converter and analog-digital converter;
Processing module converts the signals collecting that collects to digital quantity and is stored in the memory, and processing module comprises cpu chip;
Communication module is real-time transmitted to ground receiving equipment with the mode of digital quantity through communication interface that processing module is stored in the memory; Perhaps transferring to external memory storage waits to land and it is transferred on notebook or the handheld device after reclaiming; Supply Ground analysis and processing, communication module comprises serial communication device and external memory storage;
The effect of power module is to above-mentioned three module for power supply; Comprise transformation Voltage stabilizing module and electrification reset module; Missile power supply is stabilized to low-voltage and the stable electrification reset module of exporting to; Supply power to cpu chip through anti-jamming circuit differentiation digital voltage and aanalogvoltage again, and give external memory storage and the power supply of serial communication device in acquisition module and the communication module;
Analog-digital converter in the said acquisition module is connected with the data acquisition port of cpu chip, and a COM1 of cpu chip is connected with external memory storage, and another COM1 of cpu chip is connected with the serial communication device.
Another object of the present invention is to provide a kind of above-mentioned missile-borne data testing system; It also comprises housing and end cap; Said housing comprises inner housing and shell body, and inner housing is sealed acquisition module, processing module, communication module and power module, and shell body and end cap are encapsulated in the inner housing outside.
Missile-borne data testing system provided by the invention can carry out grinding in the various flight experiment processes of bullet; The various status datas of real time record bullet; Accomplish state and control that plays flight attitude and the real time record of carrying out data; Understand the work schedule of computer on the duty, bullet of bullet each subsystem on the flight experiment process is hit by a bullet and the relevant parameter and the performance indications such as integrality of bullet through these data, come rapid analysis and get rid of the fault that bullet possibly occur in flight course through these data.The flight experiment data of bullet is being ground for the bullet designer provides first-hand by this system, shortens the lead time of bullet, reduces the development cost of bullet, has very high social benefit and economic benefit.
Missile-borne data testing system provided by the invention has strong especially anti high overload ability, and system has stronger anti-interference, anti-high and low-temp, dirt exclusion capabilities, and system has the multichannel changeability; Storage space volume is big, and miniaturization is reusable; Cost is low, the reliability advantages of higher.
The specific embodiment
Below in conjunction with accompanying drawing, through the specific embodiment the present invention is elaborated, characteristics of the present invention and advantage are along with these explanations will become more clear, clear and definite.
The present invention provides a kind of missile-borne data testing system, and it comprises acquisition module, processing module, communication module and power module,
Wherein acquisition module is used to gather the missile-borne sensory unit data; All signals that comprise missile-borne sensory unit; Like power supply signal, body attitude signal etc.; Comprise on the bullet for example state and control that computer correction instruction, laser detector, steering wheel instruction and decoder etc. on thermal cell, gyroscope, accelerometer, body speed waveform, the bullet play flight attitude and execution data etc., acquisition module comprises variable connector converter and analog-digital converter;
Processing module converts the signals collecting that collects to digital quantity and is stored in the memory, and processing module comprises cpu chip;
Communication module is real-time transmitted to ground receiving equipment with the mode of digital quantity through communication interface that processing module is stored in the memory; Perhaps transferring to external memory storage waits to land and it is transferred on notebook or the handheld device after reclaiming; Supply Ground analysis and processing, communication module comprises serial communication device and external memory storage;
The effect of power module is to above-mentioned three module for power supply; Comprise transformation Voltage stabilizing module and electrification reset module; Missile power supply is stabilized to low-voltage and the stable electrification reset module of exporting to; Supply power to cpu chip through anti-jamming circuit differentiation digital voltage and aanalogvoltage again, and give external memory storage and the power supply of serial communication device in acquisition module and the communication module;
Analog-digital converter in the said acquisition module is connected with the data acquisition port of cpu chip, and a COM1 of cpu chip is connected with external memory storage, and another COM1 of cpu chip is connected with the serial communication device.
In missile-borne test macro according to the present invention, data acquisition module is the core of native system.Data acquisition module mainly comprises variable connector and outside analog-digital converter.Variable connector is preferably 16 paths selector switches, and MAX306 is No. 16 selector switches, chip can be under the condition of unipolarity+4.5V-+30V or bipolarity ± 4.5V-± 20V operate as normal, can satisfy acquisition channel number and the requirement of gathering voltage range.It is that variable connector to the CMOS master chip is safe that another of variable connector mainly acts on, because when dump, variable connector is opened; And junction type FET variable connector is connected, therefore the possibility of defective chip is arranged.16 tunnel analog signals from signal source get into No. 16 selector switches.AD1674 is 12 successive approximation quick A/D converters that ADI (Analog Device) produces; Is furnished with ternary output buffer in its sheet; Thereby the face that can be directly links to each other with various typical 8 or the microprocessors of 16 bit need not the additional logic interface circuit, and can be compatible with COMS and Transistor-Transistor Logic level.Include high precision reference voltage source and clock circuit in addition in the chip, make them can under the situation that does not need any external circuit and clock signal, accomplish a merit A/D translation function, extremely easy to use.In order fully intactly to obtain the transmission signal, preferably between multiplexer channel selector switch and A/D converter, follower is set.(related algorithm is for example referring to " missile-borne data testing system ", Malaysian's gift, Beijing Institute of Technology's academic dissertation).
The connected mode of data acquisition module and cpu chip (data transfer mode) adopts address bus and data/address bus mode to transmit.In native system,, use the AD1674 device as analog-digital converter; It is up-to-date a kind of model in 12 (also can realize 8 conversions) AD converter AD574 series; It has not only increased sampling holder, and the speed of service is higher, its maximum μ s conversion times 10.When 12 transformation results of output; When being 16 for data/address bus with CPU; Adopt 12 modes once with data output,, then at twice 12 bit data are taken out if data/address bus is 8; Very easy to use, the duty of AD1674 is by CE, R/C, 12/8, CS and five input signal decisions of A0.Have only when enabling wire size CE=1, could be in running order during chip select line CS=0; During R/C=0, the log-on data conversion; During R/C=1, start read data; 12/8 is used for control output data format.When 12/8=1, and 12 transformation results of line output; When 12/8=0, translation data result controls with A0 at twice and line output, when A0=0, and the output most-significant byte, during A0=1, low 4 of output.In addition, A0 also is used to control the figure place of A/D data transaction, when starting the A/D conversion, during A0=0, does 12 conversions, during A0=1, does 8 conversions.The STS pin of A/D converter is the duty output line, and after the startup conversion, during STS=1, the expression conversion is carried out; When STS=0, the expression EOC.Its AD conversion routine flow chart is as shown in Figure 5.
In the present invention, as cpu chip, use MSP430F149.(available from TI company), it is low in energy consumption, and volume is little, is suitable for using on the bullet.
In the present invention, because the supply voltage of master chip MSP430F149 is+3.3V, and the supply voltage of battery is+12V on the bullet; Therefore adopt the LM7805 device at the transformation Voltage stabilizing module; LM7805 with on the bullet+12V power supply transformation is+5V, the electrification reset module is used the TPS7333Q device, its general+5V power supply transformation is+3.3V; Distinguish digital voltage and aanalogvoltage through anti-jamming circuit again, supply power to chip MSP430F149.
Particularly, Fig. 2 shows transformation Voltage stabilizing module circuit, i.e. LM7805 and accessory circuit thereof, and wherein, "+12V " locates in the missile power supply connection layout, and output is located for "+5V ", locates to be connected with "+5V " among Fig. 3;
Fig. 3 shows the electrification reset modular circuit, i.e. TPS7333Q and accessory circuit thereof, and wherein, "+5V " links to each other among "+5V " and Fig. 2, and "+3.3V " is output, is connected with "+3.3V " among Fig. 4, and " RST " links to each other with MSP430F149 " RST ";
Fig. 4 shows anti-jamming circuit, and wherein, "+3.3V " is connected among "+3.3V " and Fig. 3, and " DVcc3 " is connected with the analog power end with the digital power end of MSP430F149 respectively with " AVcc3 ".
In this missile-borne data testing system, power module generates 12V, ± 15V, and 5V, several kinds of voltages such as 3.3V, the primary voltage of power module is given power supply by battery 12V on the bullet, and other voltage is produced by the power module transformation.Voltage through conversion is given other three module for power supply through connecting line respectively.
In missile-borne test macro of the present invention, the digital quantity that the serial communication device is used for processing module is stored in memory is real-time transmitted to ground receiving equipment, Ground analysis and processing altogether through the mode of communication interface; External memory storage is stored to this digital quantity wherein through communication interface, waits to land it to be transferred on notebook or the handheld device after reclaiming, and supplies Ground analysis and processing.It is as shown in Figure 6 that the external memory storage page or leaf is read subroutine flow chart.
In missile-borne test macro of the present invention, the connected mode between the cpu chip of processing module and the communication module adopts the mode of serial communication to communicate by letter, in Industry Control; Serial ports is the computer used always and the transmission channel between the external series equipment; Because its structure is simple relatively, be easy to realize, so be widely used; The receiver of serial port module and transmitter are double bufferings, have independent enable bit and interrupt flag bit separately.Both can be independent enable bit and interrupt flag bit.Both can work independently, and also can under full duplex mode, work simultaneously.Serial port module is used even-odd check, and is overtime, and frame is made mistakes and monitored the accurate transmission of guaranteeing data, and serial module has interrupt mode and two kinds of modes of operation of inquiry mode.
In the present invention,, use the MAX232 device,, use the K9F6408 device as external memory storage as the serial communication device.
According to missile-borne data testing system of the present invention, preferably also comprise housing, said housing comprises inner housing and shell body, and inner housing is through enveloping data acquisition module, processing module, communication module and power module, and shell body and end cap are encapsulated in the inner housing outside.
In a further preferred embodiment; Soft encapsulation between inner housing and measurement module, processing module and the output control module; For example be filled with epoxide-resin glue, silicon gel; Soft encapsulation between inner housing and the shell body for example is filled with padded coaming such as silicon gel, so that improve the shock resistance of missile-borne data testing system.As shown in Figure 7.
Embodiment 1
Acquisition module, processing module, communication module and power module are distributed on the circular circuit printing plate of two Φ 40 main power module and the acquisition module arranged on first block of plate, main cpu data processing module and the communication module of arranging on second plate.Wherein, used device is as shown in table 1 below in each module:
Table 1: used device in the module
Transformation Voltage stabilizing module circuit in the power module is as shown in Figure 2, and the electrification reset modular circuit is as shown in Figure 3, and anti-jamming circuit is as shown in Figure 4.
Between two circuit boards mechanical interface and electrical interface being arranged, is that the hole by the Φ 3 on three circles that are evenly distributed on Φ 36 (diameter 36mm) connects, and electrical interface is connected the needed power line of CPU module and communication module.A whole set of Circuits System connects the hole of back through the Φ 3 on three circles that are evenly distributed on Φ 36 and is connected with housing; Connect the back and adopt epoxy resin (epoxide-resin glue 211; Two components cooperate with 4: 1 ratios) be encapsulated in the aluminum hull (inner housing), end cap and shell body all adopt high strength alloy steel; Guarantee when body lands indeformable; Adopt soft encapsulation between the inner and outer shell, filling epoxy resin or silicon gel) cushioning effect is arranged between each module of circuit and shell body, make each module of circuit when impact ground under the effect in soft encapsulation suffered impact acceleration reduce.
Gained missile-borne data testing system is placed on the warhead position of bullet, links to each other with the measured signal of the system of bullet, after accomplishing the flight test; Reclaim this system; And carry out serial port with ground-based computer and link, can read institute's image data, and adopting data handled with computer.
The missile-borne data testing system is installed on the bullet; Deng bullet the emission moment; Battery is activated on the bullet, and missile-borne this moment data testing system is promptly started working, and the sensor signal of having started working this moment just enters into the CPU module through data acquisition module; Be stored in the external memory storage simultaneously, and the still low level that the module that not start working this moment collects.Along with continuing of flight course, each sensor signal of progressively starting working all is recorded in the external memory storage successively, and after bullet landed by the time, battery also possibly worked a period of time or quit work on the bullet.After the missile-borne data testing system is reclaimed, through surface power supply, the data of storing are exported to data storage on the notebook through serial ports or U S B mouth, carry out sequential and analysis of the accuracy to all signals of data on the bullet.
Gained missile-borne data testing system volume is very little, low in energy consumption, and is overload-resistant up to 30000G, reusable, is applicable on the various bullets, like terminal-guided shell, rocket, rocket projectile etc.
More than through anti-rational embodiment the present invention is specified; These embodiments and should not be construed as limitation of the present invention but; It will be apparent to those skilled in the art that; Under the situation that does not depart from spirit and scope of the invention, can carry out multiple improvement, replacement or modification to technical scheme of the present invention and embodiment thereof, these all should fall in protection scope of the present invention.